C1 OA done, waiting to hear back
Just did the C1 CodeSignal OA. 70 minutes, 4 problems.
Q1 was a string manipulation warmup, got through it fast. Q2 involved splitting an array into two groups based on element counts, worked through it okay. Q3 was matrix operations (reverseRow, swap, rotate 90°), took a while to implement all the cases cleanly. Q4 had me counting ordered pairs whose concatenation equals a target number. Got through it but I'm not sure I hit all the edge cases tbh.
Overall felt pretty time-crunched on Q3/Q4. The problem descriptions are long and easy to misread. Waiting to hear back.
Replies (4)
The pair concatenation one is sneaky. Easy to mess up the ordering and count wrong pairs.
Q3 and Q4 always feel brutal on this OA. The rotate case alone has like 3 things to get right.
Yeah the matrix rotate tripped me up too when I did mine. Had to redo my index math twice.
How long did you spend on Q1 and Q2? I blew too much time on them and ran out for Q4 when I did this.
Good luck. 3 days turnaround from what I heard after submission.